<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    ul {
      list-style: none;
    }

    a {
      text-decoration: none;
      color: #fff;
    }

    .tb-promo {
      position: relative;
      width: 520px;
      height: 280px;
      margin: 100px auto;
      background-color: pink;
      border-radius: 12px;
      text-align: center;
      overflow: hidden;
    }

    .tb-promo img {
      width: 520px;
      height: 280px;
    }

    .prev,
    .next {
      box-sizing: border-box;
      position: absolute;
      top: 50%;
      height: 30px;
      width: 24px;
      margin-top: -15px;
      padding: 4px;
      background-color: rgba(0, 0, 0, .3);
      border-radius: 15px;
    }

    .tb-promo .prev {
      left: 0px;
      border-top-left-radius: 0;
      border-bottom-left-radius: 0;
    }

    .tb-promo .next {
      right: 0px;
      border-top-right-radius: 0;
      border-bottom-right-radius: 0;
    }

    .tb-promo .promo-nav {
      position: absolute;
      left: 50%;
      bottom: 20px;
      width: 70px;
      height: 14px;
      margin-left: -35px;
      background: rgba(0, 0, 0, .2);
      border-radius: 6px;
    }


    .promo-nav li {
      float: left;
      width: 8px;
      height: 8px;
      margin-left: 7px;
      margin-top: 3px;
      background-color: #fff;
      border-radius: 5px;
    }

    .promo-nav .actived {
      background-color: #ff5000;
    }
  </style>
</head>

<body>
  <div class="tb-promo">
    <img src="./images/tb-promo-pic2.jpg" alt="">
    <a href="#" class="prev">&lt;</a>
    <a href="#" class="next">&gt;</a>
    <ul class="promo-nav">
      <li></li>
      <li class="actived"></li>
      <li></li>
      <li></li>
    </ul>
  </div>
</body>

</html>